Energy-Efficient CRAC Unit cools large data centers.
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Press Release Summary:
Available in upflow and downflow configurations, Liebert CW(TM) chilled water-based computer room air conditioner (CRAC) delivers precision cooling and humidity control matched to needs of data center equipment. Cooling capacities are available up to 181 kW, and unit uses building's existing chilled water supply as cooling source. Larger downflow models are available with optional energy-efficient EC plug fans, while all versions are offered with optional variable-speed drive fans.
Original Press Release:
Emerson Network Power Enhances Liebert CRAC Unit to Provide Energy Efficient Precision Cooling for Large Data Centers
Columbus, Ohio [December 16, 2008] - As data center and IT managers continue to show preference for products that aide in data center energy reduction, Emerson Network Power, a business of Emerson (NYSE: EMR) and the global leader in enabling Business-Critical Continuity(TM), has introduced a technologically-enhanced, chilled water-based computer room air conditioning unit (CRAC) that offers greater energy savings to large data centers.
The Liebert CW(TM) is a precision cooling system available in upflow and downflow configurations and in cooling capacities up to 181 kW. The system, which uses existing building chilled water supply as the cooling source, offers precision cooling and humidity control matched to the needs of data center equipment. Larger downflow models of the Liebert CW are available with optional energy efficient EC plug fans, which achieve the highest level of energy efficiency. Both upflow and downflow models in all capacities are available with optional variable speed drive fans to improve energy efficiency over standard fan operation.
A recent Emerson Network Power analysis of data center energy usage found that cooling systems-comprised of cooling and air movement equipment-can account for approximately 38 percent of energy consumption. Independent tests of the energy efficiency of different types of fan systems found that in raised-floor data centers, where it can be used to its best advantage, the EC plug fan offers the lowest annual operating cost.
The Liebert CW features the Liebert iCOM(TM) control system that enables multiple units to communicate and operate as a system to provide maximum control of temperature and humidity across a room while optimizing the efficiency of the entire cooling system.
Ron Spangler, senior product manager, Liebert Precision Cooling, Emerson Network Power, said, "Our performance test results showed that the EC plug fan saves 30 percent more energy compared to a centrifugal fan at full speed. When the iCOM controls lowered the fan speed by only 20 percent, EC plug fans provide 65 percent energy savings in large data centers with chilled water cooling systems."
In large data centers with chilled water systems, an integrated approach to dissipating high heat can be applied by combining the room-level cooling offered by the Liebert CW and the targeted cooling provided by the Liebert XD(TM) heat density cooling solution. The Liebert CW provides base-level cooling and humidification while the heat generated by high density, rack-mounted electronic equipment is removed at its source by the Liebert XD.
With the Liebert CW, which is based on the industry-leading reliable design of the Liebert Deluxe System/3 Chilled Water system, customers may also purchase remote monitoring service for critical support equipment. Remote monitoring enables Emerson Network Power's Liebert Services business to monitor systems, predict and troubleshoot potential issues, and diagnose and respond to problems.
For more information on the Liebert CW, or any other Liebert technologies and services from Emerson Network Power, visit www.liebert.com.
About Emerson Network Power
Emerson Network Power, a business of Emerson (NYSE:EMR), is the global leader in enabling Business- Critical Continuity(TM) from grid to chip for telecommunication networks, data centers, health care and industrial facilities. Emerson Network Power provides innovative solutions and expertise in areas including AC and DC power and precision cooling systems, embedded computing and power, integrated racks and enclosures, power switching and controls, monitoring, and connectivity. All solutions are supported globally by local Emerson Network Power service technicians. Liebert power, precision cooling and monitoring products and services from Emerson Network Power improve the utilization and management of data center and network technologies by increasing IT system availability, flexibility and efficiency. For more information, visit www.Liebert.com, www.EmersonNetworkPower.com or www.eu.EmersonNetworkPower.com.
About Emerson
Emerson (NYSE: EMR), based in St. Louis, Missouri (USA), is a global leader in bringing technology and engineering together to create innovative solutions for customers through its network power, process management, industrial automation, climate technologies, and appliance and tools businesses. Sales in fiscal 2008 were $24.8 billion. For more information, visit www.Emerson.com.
